CN110437723B - Multi-effect antifouling paint and construction method thereof - Google Patents
Multi-effect antifouling paint and construction method thereof Download PDFInfo
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- CN110437723B CN110437723B CN201910649858.3A CN201910649858A CN110437723B CN 110437723 B CN110437723 B CN 110437723B CN 201910649858 A CN201910649858 A CN 201910649858A CN 110437723 B CN110437723 B CN 110437723B
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- C08G18/46—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
- C09D5/1612—Non-macromolecular compounds
- C09D5/1625—Non-macromolecular compounds organic
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
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Abstract
The invention discloses a multi-effect antifouling paint, which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 40-45 parts of fluorine-silicon modified polyester resin, 0.5-2 parts of antistatic agent, 0.5-2 parts of hydrophobic restoring agent, 0.5-2 parts of mildew-proof and algae-proof agent, 0.5-2 parts of flatting agent, 0.5-2 parts of wetting dispersant and 2-5 parts of defoaming agent; the component B comprises 30-50 parts of polyisocyanate prepolymer; the mass ratio of the component A to the component B is 4-10: 1; the fluorine-silicon modified polyester resin contains hydroxyl. The multi-effect protective coating has the functions of corrosion prevention, pollution prevention, self cleaning, doodling prevention and adhesion prevention through the synergistic effect of the fluorine-silicon modified polyester resin, the polyisocyanate prepolymer and various functional auxiliaries, and has excellent comprehensive performance. The invention also discloses a construction method of the multi-effect antifouling paint.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a multi-effect antifouling coating and a construction method thereof.
Background
Street adlets and doodles become the incurable diseases of the government and citizens, and particularly, people flow in numerous public places or tourist attractions to be more serious, so that the image of a city is seriously influenced, and a great amount of manpower and financial resources are consumed for clearing the street adlets and doodles by government organizations.
The multi-effect antifouling paint with the functions of preventing contamination, self-cleaning, preventing doodling and resisting adhesion is applied to municipal engineering and achieves good effect. The antifouling coating such as current anti-stain automatically cleaning, prevent scribbling, antiseized subsides is mostly low surface energy material, from the angle of coating matrix resin, and low surface energy antifouling coating mainly can divide into: silicones, organofluorines and fluorosilicones. The organosilicon generally refers to polysiloxane, and due to the high bond energy, large bond angle and high polarity of Si-O bonds, organosilicon polymers have excellent heat resistance, oxidation resistance, cold resistance, weather resistance, electric insulation, hydrophobicity, anti-sticking and demolding property and the like; although silicone resin has many advantages, it has the defects of poor mechanical properties and poor organic solvent resistance when used as a coating material, and when it is used alone as a film-forming material of a coating, the coating effect is poor, and the curing temperature and the curing time are high, which limits the application range. The organic fluorine has excellent durability and chemical resistance, and the fluorine-containing acrylic resin has low surface energy and also has good chemical inertness, weather resistance, stain resistance, water resistance, oil resistance, ultraviolet resistance and the like, so the organic fluorine has wide application. The fluorine-silicon type generally uses organic resin to modify fluorine silicon, so as to combine the excellent performances of the fluorine-silicon resin and other organic resins to prepare the antifouling paint with more excellent comprehensive performance, and the organic resin commonly used for modification comprises alkyd resin, ester resin, polyurethane, acrylic resin, epoxy resin, phenolic resin, polyimide resin and the like. The widely applied fluorosilicone modified organic resin at present mainly comprises fluorosilicone resin modified epoxy resin, fluorosilicone resin modified acrylic resin, fluorosilicone resin modified polyurethane resin and fluorosilicone modified polyester resin. Although the existing low-surface-energy antifouling paint has a good antifouling effect, most of the existing low-surface-energy antifouling paints only aim at one or a certain class of pollutants, and cannot simultaneously achieve the functions of preventing stains, self cleaning, doodling, adhesion and corrosion. In addition, the initial scrawling-imitating and anti-sticking properties of the existing low-surface-energy antifouling paint are good, but after high-temperature treatment, repeated sticking or several times of scrawling cleaning, the function loss is large, and the paint is characterized by coating gloss loss, increased surface adhesion, difficult removal of scrawling, film falling, poor weather resistance and short actual outdoor service life.
Therefore, along with the development of urban construction, the development of an antifouling paint with multiple-effect protection function and excellent comprehensive properties such as weather resistance, corrosion resistance and mechanical properties is urgently needed.
Disclosure of Invention
The invention aims to overcome the technical defects and provides a multi-effect antifouling paint which has the functions of stain resistance, self cleaning, doodling resistance, sticking resistance and corrosion resistance, and has excellent comprehensive properties such as good weather resistance, corrosion resistance and mechanical properties; the invention also aims to provide a construction method of the multi-effect antifouling paint.
In order to achieve the technical purpose, the technical scheme of the invention provides a multi-effect antifouling paint which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 40-45 parts of fluorine-silicon modified polyester resin, 0.5-2 parts of antistatic agent, 0.5-2 parts of hydrophobic restoring agent, 0.5-2 parts of mildew-proof and algae-proof agent, 0.5-2 parts of flatting agent, 0.5-2 parts of wetting dispersant and 2-5 parts of defoaming agent; the component B comprises 30-50 parts of polyisocyanate prepolymer; the mass ratio of the component A to the component B is 4-10: 1; the fluorine-silicon modified polyester resin contains hydroxyl.
The invention also provides a construction method of the multi-effect antifouling paint, which comprises the following steps:
s1, cleaning the surface of the base material, removing residual paint film, rust, oil stain, oxide skin and sundries on the surface of the base material, and coating a layer of primer on the surface of the base material after ensuring that the surface of the base material is free from rust, oil stain, dust and water mark;
s2, after the surface of the primer is dried and cured, weighing the components according to the composition of the component A and the component B, respectively mixing the component A and the component B uniformly, mixing the component A and the component B according to the mass ratio of 4-10: 1 to obtain a finish, and uniformly spraying the finish on the primer until the finish is dried and cured.
Compared with the prior art, the invention has the beneficial effects that:
1. the multi-effect antifouling paint provided by the invention adopts the fluorine-silicon modified polyester resin containing hydroxyl as the main resin, has the excellent characteristics of organic silicon and organic fluororesin and extremely low surface energy, and is crosslinked and cured by the fluorine-silicon modified polyester resin containing hydroxyl and polyisocyanate prepolymer to generate a coating with extremely strong hydrophobicity, oleophobicity, stain resistance, self-cleaning property and weather resistance; then the coating has better surface protection effect on water-soluble dirt, oily stain, charged dust, biological fungi and the like by adding the synergistic effect of an antistatic agent, a hydrophobic restoring agent, a mildew-proof algaecide and other functional auxiliaries in a specific ratio; the multi-effect protective coating has the advantages that through the synergistic effect of the fluorine-silicon modified polyester resin, the polyisocyanate prepolymer and various functional auxiliaries, the multi-effect protective coating not only has the four-prevention functions of corrosion resistance, pollution prevention, self cleaning, doodling prevention and sticking prevention, but also has the characteristics of excellent comprehensive performances such as hydrophobicity, surface drying speed, strong weather resistance, wear resistance, washing resistance, acid and alkali resistance, high temperature resistance and the like;
2. the multi-effect antifouling paint provided by the invention is suitable for various conventional base materials in municipal facilities, such as concrete, cement, marble, metal, wood fiber board, glass, acrylic, plastic, synthetic materials and the like, the adhesive force on the base materials can reach level 1, and the application range is wide;
3. the construction method provided by the invention is simple to operate, has lower requirements on construction equipment and construction conditions, is suitable for field construction, is easy to construct, has quick surface drying, greatly improves the construction efficiency, has excellent acid resistance, alkali resistance, solvent resistance and humidity-resistant cold and hot cycling performance after the coating is dried, has no obvious change in the artificial weather aging resistance of 3000 hours, has a static water contact angle still larger than 100 degrees after being applied outdoors for 3 years, and still has good pollution resistance and protection performance.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
The embodiment of the invention provides a multi-effect antifouling paint which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 40-45 parts of fluorine-silicon modified polyester resin, 0.5-2 parts of antistatic agent, 0.5-2 parts of hydrophobic restoring agent, 0.5-2 parts of mildew-proof and algae-proof agent, 0.5-2 parts of flatting agent, 0.5-2 parts of wetting dispersant and 2-5 parts of defoaming agent; the component B comprises 30-50 parts of polyisocyanate prepolymer; the mass ratio of the component A to the component B is 4-10: 1; the fluorine-silicon modified polyester resin contains hydroxyl.
The fluorine-silicon modified polyester resin is formed by connecting fluorine-silicon resin and polyester resin together through dehydration polycondensation; in some preferred embodiments of the present invention, the fluorine-silicon modified polyester resin is a hydroxyl group-containing fluorine-silicon modified polyester resin formed by connecting a hydroxyl group-containing fluorine-silicon resin and a hydroxyl group-containing branched polyester resin through dehydration polycondensation, and the hydroxyl value of the fluorine-silicon modified polyester resin is 50 to 150mg KOH/g. The specific types of the fluorine-silicon modified resin with hydroxyl and the branched polyester resin with hydroxyl active groups in the invention are not particularly limited, and those skilled in the art can select the two resins according to actual conditions and adjust the related preparation methods according to the selected raw materials as long as the hydroxyl in the finally prepared fluorine-silicon modified polyester resin can be ensured.
In some preferred embodiments of the present invention, the antistatic agent is a special hydrophobic antistatic agent modified with fluorosilicone; the hydrophobic restoring agent is SHP-50 silyl hydrophobic restoring agent; the mildew-proof algaecide is one or a mixture of more of isothiazolinone, benzimidazole, iodopropargyl, substituted aromatic and dithiocarbamate; the flatting agent is an acrylate flatting agent; the wetting dispersant is acrylate wetting dispersant; the defoaming agent is an organic silicon defoaming agent; the specific types of the mildew-proof and algae-preventing agent, the leveling agent, the wetting dispersant and the defoaming agent are not particularly limited, and those skilled in the art can select corresponding auxiliary agents commonly used in the art, such as: the isothiazolinone can be 4, 5-dichloro-2-n-octyl-3-isothiazolinone; the benzimidazole may be benzimidazole methyl carbamate; the iodopropargyl can be 3-iodo-2-propargyl butyl carbamate; the acrylate flatting agent can be selected from polyethylacrylate, polybutylacrylate and the like; the organic silicon defoaming agent can be polydimethylsiloxane and the like, as long as corresponding auxiliary agents can play corresponding roles.
More preferably, the mildew-proof algaecide is benzimidazole and substituted aromatic hydrocarbon, and the mass ratio of the benzimidazole to the substituted aromatic hydrocarbon is 1: 1.
In some preferred embodiments of the present invention, the polyisocyanate prepolymer is one of HDI trimer, MDI trimer, IPDI trimer and TDI trimer.
In some preferred embodiments of the present invention, the component A and the component B further contain a solvent, and the solvent is added to the component A and the component B respectively to make up to 100 parts; the solvent is one or a mixture of more of ethyl acetate, butyl acetate, toluene, xylene and ethylene glycol monobutyl ether.
In some preferred embodiments of the present invention, the component a in the multi-effect antifouling paint comprises the following components in parts by weight: 45 parts of fluorine-silicon modified polyester resin, 1 part of antistatic agent, 1 part of hydrophobic restoring agent, 1 part of mildew-proof and algae-proof agent, 1 part of flatting agent, 1 part of macromolecular wetting dispersant and 2 parts of defoaming agent, and adding a solvent to supplement 100 parts; the component B comprises 50 parts of polyisocyanate prepolymer, and the solvent is added to make up to 100 parts; the mass ratio of the component A to the component B is 4: 1.
The embodiment of the invention also provides a construction method of the multi-effect antifouling paint, which comprises the following steps:
(1) cleaning the surface of a base material, removing residual paint films, rust, oil stains, oxide scales and sundries on the surface of the base material, and coating a layer of primer on the surface of the base material after ensuring that the surface of the base material is free from rust, oil stains, dust and water marks;
(2) after the surface of the primer is dried and cured, weighing the components according to the composition of the component A and the component B, respectively mixing the component A and the component B uniformly, mixing the component A and the component B according to the mass ratio of 4-10: 1 to obtain a finish paint, uniformly spraying the finish paint on the primer, and drying and curing.
Wherein, the component A is prepared by the following method: mixing the fluorine-silicon modified polyester resin, the antistatic agent, the hydrophobic restoring agent, the mildew and algae resistant agent, the leveling agent, the wetting dispersant, the defoaming agent and the solvent, and stirring and dispersing uniformly to obtain the component A.
The component B is prepared by the following method: and mixing the polyisocyanate prepolymer and the solvent, and stirring and dispersing uniformly to obtain the component B.
In some preferred embodiments of the present invention, the dry film thickness of the primer in step (1) is 50 to 60 um; the specific type of the primer is selected according to the type of the base material, so long as the primer has good adhesive force with the base material; the primer can be sprayed, brushed and rolled, in some preferred embodiments of the invention, the primer is sprayed by air, the spraying pressure is 2-4 bar when the primer is sprayed, the spraying distance is 15-20 cm, the spraying viscosity is 20-40 s, and the primer can be sprayed by 3-4 guns.
In some preferred embodiments of the present invention, the dry film thickness of the topcoat is 50 to 60 um; when the finish paint is sprayed, the spraying pressure is 2-4 bar, the spraying distance is 15-20 cm, and 3-4 guns can be sprayed.
In some preferable embodiments of the invention, the construction temperature of the construction method is 10-35 ℃, and the relative humidity of air is less than or equal to 75%.
In order to further illustrate the present invention, the following examples are given to further illustrate the present invention. The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified; the materials, reagents and the like used in the examples of the present invention were commercially available unless otherwise specified, wherein the SHP-50 silyl hydrophobic recovery agent was obtained from Dow Corning, USA.
Example 1:
the embodiment 1 of the invention provides a multi-effect antifouling paint, which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 45 parts of fluorine-silicon modified polyester resin containing hydroxyl, 1 part of fluorine-silicon modified special hydrophobic antistatic agent, 1 part of SHP-50 silyl hydrophobic restoring agent, 0.5 part of benzimidazole mildew-proof algaecide, 0.5 part of substituted aromatic hydrocarbon mildew-proof algaecide, 1 part of acrylate flatting agent, 1 part of acrylate wetting dispersant, 2 parts of organic silicon defoamer and 48 parts of solvent (the solvent is mixture of butyl acetate and dimethylbenzene according to a ratio of 1: 1); the component B comprises 50 parts of HDI tripolymer and 50 parts of solvent (the solvent is formed by mixing butyl acetate and dimethylbenzene according to the ratio of 1: 1); the mass ratio of the component A to the component B is 4: 1.
The embodiment 1 also provides a construction method of the multi-effect antifouling paint, which comprises the following steps:
(1) cleaning the surface of the base material, removing residual paint film, rust, oil stain, oxide skin and sundries on the surface of the base material, and ensuring that the surface of the base material is free from rust, oil stain, dust and water mark;
(2) under the conditions that the temperature is 10-35 ℃ and the relative air humidity is less than 75%, coating a layer of primer on the surface of a base material, wherein the dry film thickness of the primer is 55 mu m;
(3) after the surface of the primer is dried and solidified, mixing the fluorine-silicon modified polyester resin, the antistatic agent, the hydrophobic restoring agent, the mildew and algae resistant agent, the leveling agent, the wetting dispersant, the defoaming agent and the solvent, and stirring and dispersing uniformly to obtain a component A; mixing the polyisocyanate prepolymer and the solvent, and uniformly stirring and dispersing to obtain a component B; uniformly mixing the component A and the component B according to the mass ratio of 4:1, curing for 15min to obtain finish paint, uniformly spraying the finish paint on the primer, wherein the dry film thickness of the finish paint is 55 mu m, and drying and curing the finish paint.
After the construction of the multi-effect antifouling paint in the embodiment is completed, the surface drying time of a paint film at 25 ℃ is about 30min, the paint film has super-hydrophobic property after being dried for 1h, the paint film is completely cured after 24h, and the coating property reaches the best in 72 h. The performance of the multi-effect antifouling paint in the example was tested after 72h of construction, and the test results are shown in table 1.
Example 2:
the embodiment 2 of the invention provides a multi-effect antifouling paint which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 40 parts of fluorine-silicon modified polyester resin containing hydroxyl, 0.5 part of fluorine-silicon modified special hydrophobic antistatic agent, 0.5 part of SHP-50 silyl hydrophobic restoring agent, 0.25 part of benzimidazole mildew-proof algaecide, 0.25 part of substituted aromatic hydrocarbon mildew-proof algaecide, 0.5 part of acrylate leveling agent, 0.5 part of acrylate wetting dispersant and 3 parts of organic silicon defoamer, and 54.5 parts of solvent (the solvent is mixed by butyl acetate and xylene according to a ratio of 1: 1); the component B comprises 30 parts of MDI tripolymer and 70 parts of solvent (the solvent is a mixture of butyl acetate and xylene according to a ratio of 1: 1); the mass ratio of the component A to the component B is 10: 1.
The method of applying the multi-effect antifouling paint of the embodiment 2 is the same as that of the embodiment 1, except that: the dry film thickness of the primer and the finish paint is 50um, and the component A and the component B are mixed according to the mass ratio of 10:1 when the finish paint is prepared. The performance of the multi-effect antifouling paint in the embodiment is tested after 72 hours of construction, and the test results are shown in Table 1.
Example 3:
embodiment 3 of the present invention provides a multi-effect antifouling paint, comprising a component a and a component B, wherein the component a comprises the following components in parts by weight: 42.5 parts of fluorine-silicon modified polyester resin containing hydroxyl, 2 parts of fluorine-silicon modified special hydrophobic antistatic agent, 2 parts of SHP-50 silyl hydrophobic restoring agent, 1 part of benzimidazole mildew-proof algaecide, 1 part of substituted aromatic hydrocarbon mildew-proof algaecide, 2 parts of acrylate leveling agent, 2 parts of acrylate wetting dispersant and 5 parts of organic silicon defoamer, and 42.5 parts of solvent (the solvent is mixture of butyl acetate and xylene according to a ratio of 1: 1); the component B comprises 40 parts of TDI tripolymer and 60 parts of solvent (the solvent is mixed by butyl acetate and xylene according to a ratio of 1: 1); the mass ratio of the component A to the component B is 7: 1.
The method of applying the multi-effect antifouling paint of the embodiment 3 is the same as that of the embodiment 1, except that: the dry film thickness of the primer and the finish paint is 60um, and the component A and the component B are mixed according to the mass ratio of 7:1 when the finish paint is prepared. The performance of the multi-effect antifouling paint in the embodiment is tested after 72 hours of construction, and the test results are shown in Table 1.
Comparative example 1:
this example provides a multi-effect antifouling paint, which has the same composition and construction method as in example 1, except that self-crosslinking fluorosilicone resin is used instead of hydroxyl-containing fluorosilicone modified polyester resin.
The performance of the multi-effect antifouling paint in the example is tested, and after the test, the multi-effect antifouling paint is found to have partial peeling, obvious light loss and partial glue residues after being tested for 50 times of repeated adhesion resistance, and the 180-degree peel strength is 0.3N/mm; through an outdoor rain trace test (90d), the multi-effect antifouling paint has the phenomena of partial bubbling, little cracking, peeling and the like, the stain resistance is 15 percent, and obvious rain traces are formed; the adhesion and antifouling performance of the multi-effect antifouling paint were significantly reduced compared to the multi-effect antifouling paint in example 1.
Comparative example 2:
this example provides a multi-effect antifouling paint, which has the same composition and construction method as in example 1, except that a hydrophilic type antistatic agent commonly used in the art is used instead of a special hydrophobic antistatic agent modified with fluorosilicone.
The performance of the multi-effect antifouling paint in the example is tested, and after the test, the anti-static coefficient of the multi-effect antifouling paint is increased, but the surface energy of the coating is also increased, so that the graffiti cannot be easily erased by lint-free cloth, and the small advertisements can leave glue marks on the surface.
TABLE 1 Performance test results of the multi-effect antifouling paints of examples 1 to 3
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The multi-effect antifouling paint is characterized by comprising a component A and a component B, wherein the component A comprises the following components in parts by weight: 40-45 parts of fluorine-silicon modified polyester resin, 0.5-2 parts of antistatic agent, 0.5-2 parts of hydrophobic restoring agent, 0.5-2 parts of mildew-proof and algae-proof agent, 0.5-2 parts of flatting agent, 0.5-2 parts of wetting dispersant and 2-5 parts of defoaming agent; the component B comprises 30-50 parts of polyisocyanate prepolymer; the mass ratio of the component A to the component B is 4-10: 1; the fluorine-silicon modified polyester resin contains hydroxyl; the fluorine-silicon modified polyester resin is formed by connecting fluorine-silicon resin with hydroxyl and branched chain polyester resin with hydroxyl active groups together through dehydration and polycondensation, and the hydroxyl value of the fluorine-silicon modified polyester resin is 50-150 mg KOH/g;
the antistatic agent is a special hydrophobic antistatic agent modified by fluorine and silicon; the hydrophobic recovery agent is SHP-50 silyl hydrophobic recovery agent.
2. The multi-effect antifouling paint as claimed in claim 1, wherein the mildew and algae inhibitor is one or more of isothiazolinone, benzimidazole, iodopropargyl, substituted aromatic hydrocarbon and dithiocarbamate; the flatting agent is an acrylate flatting agent; the wetting dispersant is acrylate wetting dispersant; the defoaming agent is an organic silicon defoaming agent.
3. The multi-effect antifouling paint as claimed in claim 2, wherein the mildew and algae inhibitor is benzimidazole and substituted aromatic hydrocarbon, and the mass ratio of benzimidazole to substituted aromatic hydrocarbon is 1: 1.
4. The multi-effect antifouling paint of claim 1, wherein the polyisocyanate prepolymer is one of HDI trimer, MDI trimer, IPDI trimer and TDI trimer.
5. The multi-effect antifouling paint as claimed in claim 1, wherein the component A and the component B further contain a solvent, and the solvent is added to the component A and the component B to make up to 100 parts; the solvent is one or a mixture of more of ethyl acetate, butyl acetate, toluene, xylene and ethylene glycol butyl ether.
6. The multi-effect antifouling paint of claim 1, wherein the component A comprises the following components in parts by weight: 45 parts of fluorine-silicon modified polyester resin, 1 part of antistatic agent, 1 part of hydrophobic restoring agent, 1 part of mildew-proof and algae-proof agent, 1 part of flatting agent, 1 part of macromolecular wetting dispersant and 2 parts of defoaming agent, and adding a solvent to supplement 100 parts; the component B comprises 50 parts of polyisocyanate prepolymer, and the solvent is added to make up to 100 parts; the mass ratio of the component A to the component B is 4: 1.
7. The construction method of the multi-effect antifouling paint as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
s1, cleaning the surface of the base material, removing residual paint film, rust, oil stain, oxide skin and sundries on the surface of the base material, and coating a layer of primer on the surface of the base material after ensuring that the surface of the base material is free from rust, oil stain, dust and water mark;
s2, after the surface of the primer is dried and cured, weighing the components according to the composition of the component A and the component B, respectively mixing the component A and the component B uniformly, mixing the component A and the component B according to the mass ratio of 4-10: 1 to obtain a finish, and uniformly spraying the finish on the primer until the finish is dried and cured.
8. The construction method of the multi-effect antifouling paint as claimed in claim 7, wherein the dry film thickness of the primer is 50-60 um, and the dry film thickness of the finish paint is 50-60 um.
9. The construction method of the multi-effect antifouling paint as claimed in claim 7, wherein the construction temperature is 10-35 ℃, and the relative humidity of air is less than or equal to 75%.
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| JP7386752B2 (en) * | 2020-04-24 | 2023-11-27 | 信越化学工業株式会社 | Silicone composite antifouling sheet and graffiti prevention construction method using it |
| CN115074009A (en) * | 2022-05-30 | 2022-09-20 | 国网福建省电力有限公司 | Hydrophobic coating material for insulator and preparation method thereof |
| CN115717032B (en) * | 2022-12-10 | 2023-07-28 | 江苏金呢工程织物股份有限公司 | Stain-resistant coating for drying net and preparation method thereof |
| CN115960531A (en) * | 2023-02-09 | 2023-04-14 | 万载县辉明化工有限公司 | Preparation method of long-acting anti-sticking coating |
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| CN101775127A (en) * | 2009-12-30 | 2010-07-14 | 中国纺织科学研究院 | Hydrophobic modified polyester and preparation method thereof |
| CN101781519A (en) * | 2009-12-22 | 2010-07-21 | 北京航材百慕新材料技术工程股份有限公司 | Transparent anti-graffiti dirt-resistant anti-weathering coating |
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